Damper mechanism and high pressure fuel pump
    1.
    发明授权
    Damper mechanism and high pressure fuel pump 有权
    阻尼机构和高压燃油泵

    公开(公告)号:US07124738B2

    公开(公告)日:2006-10-24

    申请号:US10896039

    申请日:2004-07-22

    Abstract: To obtain a small and high performance damper mechanism which reduces pressure pulsation in low pressure-side fuel in the high pressure fuel pump in a high pressure fuel supply system or a high pressure fuel pump provided with the small and high performance damper mechanism.Two metal diaphragms are welded together over the entire circumference to obtain a metal diaphragm assembly (also referred to as “double metal diaphragm damper”). The whole or part of the portion of the metal diaphragm assembly other than the weld (for example, the portion inside the weld) is clamped by a pressing member and thereby the assembly is secured in a housing enclosure. The housing enclosure may be formed integrally with the body of a high pressure pump.

    Abstract translation: 为了获得能够降低高压燃料供给系统中的高压燃料泵的低压侧燃料的压力脉动的小型,高性能阻尼机构,或具有小型高性能阻尼机构的高压燃料泵。 两个金属隔膜在整个圆周上焊接在一起,以获得金属隔膜组件(也称为“双金属隔膜阻尼器”)。 除了焊缝(例如,焊缝内的部分)之外的金属隔膜组件的部分的全部或部分被按压构件夹紧,从而将组件固定在壳体外壳中。 壳体外壳可以与高压泵的主体一体地形成。

    Damper mechanism and high pressure fuel pump
    3.
    发明申请
    Damper mechanism and high pressure fuel pump 有权
    阻尼机构和高压燃油泵

    公开(公告)号:US20070079810A1

    公开(公告)日:2007-04-12

    申请号:US11546430

    申请日:2006-10-12

    Abstract: To obtain a small and high performance damper mechanism which reduces pressure pulsation in low pressure-side fuel in the high pressure fuel pump in a high pressure fuel supply system or a high pressure fuel pump provided with the small and high performance damper mechanism. Two metal diaphragms are welded together over the entire circumference to obtain a metal diaphragm assembly (also referred to as “double metal diaphragm damper”). The whole or part of the portion of the metal diaphragm assembly other than the weld (for example, the portion inside the weld) is clamped by a pressing member and thereby the assembly is secured in a housing enclosure. The housing enclosure may be formed integrally with the body of a high pressure pump.

    Abstract translation: 为了获得能够降低高压燃料供给系统中的高压燃料泵的低压侧燃料的压力脉动的小型,高性能阻尼机构,或具有小型高性能阻尼机构的高压燃料泵。 两个金属隔膜在整个圆周上焊接在一起,以获得金属隔膜组件(也称为“双金属隔膜阻尼器”)。 除了焊缝(例如,焊缝内的部分)之外的金属隔膜组件的部分的全部或部分被按压构件夹紧,从而将组件固定在壳体外壳中。 壳体外壳可以与高压泵的主体一体地形成。

    Damper mechanism and high pressure fuel pump
    4.
    发明授权
    Damper mechanism and high pressure fuel pump 有权
    阻尼机构和高压燃油泵

    公开(公告)号:US07401594B2

    公开(公告)日:2008-07-22

    申请号:US11546430

    申请日:2006-10-12

    Abstract: To obtain a small and high performance damper mechanism which reduces pressure pulsation in low pressure-side fuel in the high pressure fuel pump in a high pressure fuel supply system or a high pressure fuel pump provided with the small and high performance damper mechanism.Two metal diaphragms are welded together over the entire circumference to obtain a metal diaphragm assembly (also referred to as “double metal diaphragm damper”). The whole or part of the portion of the metal diaphragm assembly other than the weld (for example, the portion inside the weld) is clamped by a pressing member and thereby the assembly is secured in a housing enclosure. The housing enclosure may be formed integrally with the body of a high pressure pump.

    Abstract translation: 为了获得能够降低高压燃料供给系统中的高压燃料泵的低压侧燃料的压力脉动的小型,高性能阻尼机构,或具有小型高性能阻尼机构的高压燃料泵。 两个金属隔膜在整个圆周上焊接在一起,以获得金属隔膜组件(也称为“双金属隔膜阻尼器”)。 除了焊缝(例如,焊缝内的部分)之外的金属隔膜组件的部分的全部或部分被按压构件夹紧,从而将组件固定在壳体外壳中。 壳体外壳可以与高压泵的主体一体地形成。

    High-Pressure Fuel Supply Pump
    5.
    发明申请
    High-Pressure Fuel Supply Pump 审中-公开
    高压燃油泵

    公开(公告)号:US20080056914A1

    公开(公告)日:2008-03-06

    申请号:US11835544

    申请日:2007-08-08

    Abstract: A high-pressure fuel supply pump having a fuel relief path for connecting a high-pressure fuel path downstream of a discharge valve for discharging fuel pressurized in a pressurizing chamber to a low-pressure fuel path upstream of an inlet valve or the pressurizing chamber, a check valve being provided in the fuel relief path as a relief valve for allowing the fuel to flow only to the low-pressure fuel path or the pressurizing chamber, wherein an energy attenuating mechanism is provided in a discharge path on a side facing the discharge valve upstream of the relief valve in the fuel relief path so as to prevent an instantaneous pressure rise caused in the discharge path from propagating to the relief valve.

    Abstract translation: 一种高压燃料供给泵,其具有燃料排出路径,用于将用于将在加压室中加压的燃料排放到入口阀或加压室上游的低压燃料路径的排出阀下游的高压燃料路径连接, 在所述燃料排出路径中设置有止回阀,作为使所述燃料仅流向所述低压燃料路径或所述加压室的安全阀,在所述排气路径的与所述排出口相对的一侧的排出路径中设置有能量衰减机构 在燃料排放路径中的安全阀上游的阀,以防止在排放路径中引起的瞬时压力升高传播到安全阀。

    Damper mechanism and high pressure fuel pump
    8.
    发明申请
    Damper mechanism and high pressure fuel pump 有权
    阻尼机构和高压燃油泵

    公开(公告)号:US20050019188A1

    公开(公告)日:2005-01-27

    申请号:US10896039

    申请日:2004-07-22

    Abstract: To obtain a small and high performance damper mechanism which reduces pressure pulsation in low pressure-side fuel in the high pressure fuel pump in a high pressure fuel supply system or a high pressure fuel pump provided with the small and high performance damper mechanism. Two metal diaphragms are welded together over the entire circumference to obtain a metal diaphragm assembly (also referred to as “double metal diaphragm damper”). The whole or part of the portion of the metal diaphragm assembly other than the weld (for example, the portion inside the weld) is clamped by a pressing member and thereby the assembly is secured in a housing enclosure. The housing enclosure may be formed integrally with the body of a high pressure pump.

    Abstract translation: 为了获得能够降低高压燃料供给系统中的高压燃料泵的低压侧燃料的压力脉动的小型,高性能阻尼机构,或具有小型高性能阻尼机构的高压燃料泵。 两个金属隔膜在整个圆周上焊接在一起,以获得金属隔膜组件(也称为“双金属隔膜阻尼器”)。 除了焊缝(例如,焊缝内的部分)之外的金属隔膜组件的部分的全部或部分被按压构件夹紧,从而将组件固定在壳体外壳中。 壳体外壳可以与高压泵的主体一体地形成。

    High-Pressure Fuel Pump
    10.
    发明申请
    High-Pressure Fuel Pump 审中-公开
    高压燃油泵

    公开(公告)号:US20120199103A1

    公开(公告)日:2012-08-09

    申请号:US13500384

    申请日:2010-08-17

    Abstract: In a conventional high-pressure fuel pump, the interference fit part between a plunger and a retainer comes loose with time due to environmental factors and this reduces the clearance between the retainer and a tappet more than necessity, resulting in increase in the contact face pressure between the plunger and a cylinder when a side force acts on the plunger, which causes seizure between the plunger and the cylinder. In this invention, a protrusion protruding toward the tappet is provided around the through-hole for press-fitting the plunger, the through-hole provided in the center portion of the retainer. Since the clearance between the retainer and the tappet can sufficiently be kept even if the joint between the retainer and the plunger comes loose, the seizure between the plunger and the cylinder and the breakage of the plunger are less likely to occur even if the side force acts on the retainer.

    Abstract translation: 在传统的高压燃料泵中,由于环境因素,柱塞和保持器之间的过盈配合部分随时间而松动,并且这比必要性减小了保持器和挺杆之间的间隙,导致接触面压力增加 当侧向力作用在柱塞上时,在柱塞和气缸之间,这引起柱塞和气缸之间的卡塞。 在本发明中,在贯通孔周围设置有朝向挺杆突出的突出部,用于压入柱塞,设置在保持器的中心部分的通孔。 由于保持器和柱塞之间的间隙即使保持器和柱塞之间的接头松动也能够保持保持器和挺杆之间的间隙,所以即使侧向力也不会发生柱塞与气缸之间的咬合以及柱塞的破损 作用在保持架上。

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